With the change of people’s lifestyle and dietary habits, the incidence of coronary heart disease is increasing year by year. Atherosclerosis and plaque blockage of coronary artery vessels cause myocardial ischemia to the point of angina pectoris, myocardial infarction and even heart failure and death, posing a great threat to people’s life safety. However, there are many misconceptions about the understanding and prevention of coronary heart disease. First, only the elderly will get coronary heart disease Clinical and many studies have found that coronary heart disease is getting younger every year, and the age of onset of coronary heart disease in China is significantly earlier. At present, the earliest myocardial infarction patients are found to be only 25 years old, and patients who have had coronary interventions or even surgical bypasses in their 30s abound. The data suggest that the hardening of coronary arteries begins as early as youth or even early childhood, and the current prevalence of hypertension in adolescents exacerbates this process. Therefore, young and middle-aged people who have a family history of coronary heart disease, hypertension, diabetes and hyperlipidemia should pay more attention to lifestyle improvement and ensure annual health checkups after middle age. Second, no risk factors will not get coronary heart disease Risk factors for coronary heart disease include age, male, family history of coronary heart disease, hypertension, diabetes, hyperlipidemia, obesity, smoking, alcohol consumption, lack of reasonable exercise, etc. People with these risk factors are at high risk of coronary heart disease. The probability of suffering from coronary heart disease and acute attack of coronary heart disease is greater in the high-risk group than in the general population, but this does not mean that people without risk factors will not suffer from coronary heart disease. Modern research suggests that genes play an important role in the pathogenesis of coronary heart disease, and that the absence of risk factors may be related to the cause of coronary heart disease. Therefore, for people without risk factors, it is also necessary to pay attention to a healthy diet and lifestyle adjustments, in addition, annual health check-ups are also important in order to detect heart problems early. Third, chest pain is coronary heart disease Chest pain is the most common clinical symptom of coronary heart disease, so many people, especially the middle-aged and elderly, are nervous when they have recurrent chest pain, suspecting that they are suffering from coronary heart disease, and even taking some drugs for coronary heart disease on their own. However, it should be noted that chest pain is also one of the important clinical manifestations of other diseases, such as cervical spondylosis, frozen shoulder, costochondritis, pleurisy, pericarditis and gastrointestinal disorders. Therefore, it is recommended to go to regular medical units for consultation and treatment when chest pain occurs, so as to enable early detection and proper treatment of coronary heart disease, and to avoid delaying the treatment of other diseases. Fourth, when the symptoms are light, do not take medicine if you can Many patients with coronary heart disease do not take medicine when the onset is not heavy, they try to tolerate not to take medicine, thinking that if they often take medicine later, it is ineffective. In fact, this worry is unnecessary, for example, nitroglycerin and other emergency drugs, only long-term continuous eating and daily eating frequency is very high, may produce resistance; intermittent taking, even three or four times a day, will not form resistance. Therefore, when patients with coronary heart disease have symptoms, they must take emergency drugs in time to relieve the symptoms of ischemia of the heart, otherwise the continuous myocardial ischemia may develop into myocardial infarction, thus causing life-threatening. Five, no symptoms or indicators can be stopped when normal There are some drugs that patients with coronary heart disease need to take for a long time or even for life, including anti-platelet drugs such as aspirin, and lipid-lowering drugs such as statins, in addition to hypertension, diabetes patients also have to take long-term antihypertensive, hypoglycemic drugs. Some patients think that their coronary heart disease is no longer a problem when they have no heart symptoms or when the indicators are normal during blood tests, so they often stop or reduce their medication on their own, which will cause the development of plaque to accelerate and lead to narrowing and blockage of blood vessels. Patients with coronary heart disease need to note that changing their own medication regimen is irresponsible to their own life and health. Any adjustment in medication regimen must be diagnosed by a cardiovascular doctor in a regular hospital. Many patients with coronary artery disease feel that their symptoms are significantly reduced after stenting or bypass surgery, and that they will not have angina attacks for a long time, and that their physical and mental strength has recovered, so they feel that everything is fine and they don’t need to pay attention anymore. This is also a common misconception among patients with coronary artery disease. Stents and bypasses only ensure the restoration of blood perfusion at the time of surgery, but how long the effect of revascularization can be maintained depends on whether the patient takes medication as prescribed, has a healthy diet and good lifestyle, and whether the patient has other risk factors for coronary heart disease, and even genetic factors. In addition, many patients will be accompanied by multiple lesions, if postoperative care is not taken, the stent and bridge vessels will be easily restenosed or even occluded, and other vessels without surgical treatment will also be prone to the aggravation of stenosis, which will eventually lead to the recurrence of angina and heart attack, and patients will not only bear the risk of life and health but also bear the cost of another surgery and medicine. Therefore, patients with coronary artery disease must pay attention to regular review after surgery, 3 months after surgery to review the blood items, six months to a year after surgery to review a coronary angiography.